The influence of the number of blades on the affinity law of impeller trim for the centrifugal oil pump is obtained.

得到了叶片数对离心油泵叶轮切割定律的影响规律性。

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A simplified model of propeller with infinite number of blades is employed to account for the effect of free wave in this paper.

为了便于计算，对兴波部分简化了计算模型，螺旋桨用无限叶数螺旋桨模型来代替。

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Because the beam was powerful enough to drill holes in razor blades, physicists measured its power in gillettes, or the number of blades penetrated.

由于激光光束的能量强大到足以在刀片上钻洞，物理学家使用穿透刀片的数量作为激光能量的计量单位。

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Which means King of Shaves will have a number of loyal customers, all purchasing new blades at regular intervals, providing King of Shaves with steady and predictable cash flow.

FORBES: King of Shaves' New Subscription Based 'Razor And Blades' Strategy

Mark Nicholls, the founder and chief executive of Sportexe, the number two maker of artificial turf in the NFL, has patented the process of "tufting" fiber optics with blades of plastic grass.

FORBES: Magazine Article

This technology will be available soon, making its grand entrance as a National Football League field in the U.S. Mark Nicholls, the founder and chief executive of Sportexe, the number two maker of artificial turf in the NFL, has patented the process of "tufting" fiber optics with blades of plastic grass.

FORBES: Magazine Article